Aoi Harukawa, Tomoya Sugisaki, and Ryou Kobayashi are three teenagers united by the hope of encountering the Summer Ghost. According to urban legend, the spirit of a young woman dressed in black with long hair appears at an abandoned airfield when fireworks are set off. While searching for the ghost, the three carry heavy burdens. Aoi, who is relentlessly bullied at school, sees no reason to keep living. Tomoya is barred from using creativity to relieve stress because of concerns it might hurt his grades. Ryou has left his basketball team, even though he still feels passionate about the sport. Each teen has their own motive for wanting to meet the spirit who died by suicide, yet it seems something else is drawing Aoi, Tomoya, and Ryou together. As their summer draws to a close, the trio starts to wonder whether the ghost can offer answers to their lingering, morbid questions about death.